{"id":"CVE-2020-15688","aliases":["EUVD-2020-7675","GHSA-6r2c-458p-644h"],"status":"published","title":"GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit...","description":"The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.04039,"percentile":0.907,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-294"],"published":"2020-07-23T12:32:37Z","modified":"2026-06-17T02:57:03Z","products":[{"vendor":"embedthis","product":"goahead"}],"references":[{"url":"https://github.com/embedthis/goahead-gpl/issues/3","tags":["x_refsource_MISC","x_refsource_CONFIRM","x_transferred","Third Party Advisory"]},{"url":"http://packetstormsecurity.com/files/159505/EmbedThis-GoAhead-Web-Server-5.1.1-Digest-Authentication-Capture-Replay-Nonce-Reuse.html","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15688"},{"url":"https://github.com/advisories/GHSA-6r2c-458p-644h"}],"sources":{"cve":[{"id":"CVE-2020-15688","description":"The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.","status":"published","published":"2020-07-23T12:32:37Z","modified":"2024-08-04T13:22:30.807Z","updated_at":"2026-11-02T14:35:50.545879Z"}],"euvd":[{"id":"EUVD-2020-7675","description":"The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.","status":"published","published":"2020-07-23T12:32:37Z","modified":"2024-08-04T13:22:30Z","updated_at":"2026-11-03T03:07:30.36726Z"}],"ghsa":[{"id":"GHSA-6r2c-458p-644h","title":"GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit...","description":"GoAhead before 5.1.2 mishandles the nonce value during Digest authentication. This may permit request replay attacks for local requests over HTTP.","status":"published","published":"2022-05-24T17:24:14Z","modified":"2023-02-08T05:07:28Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-294"],"updated_at":"2026-11-02T14:53:59.604858Z"}],"nvd":[{"id":"CVE-2020-15688","description":"The HTTP Digest Authentication in the GoAhead web server before 5.1.2 does not completely protect against replay attacks. This allows an unauthenticated remote attacker to bypass authentication via capture-replay if TLS is not used to protect the underlying communication channel.","status":"published","published":"2020-07-23T13:15:10.257Z","modified":"2026-06-17T02:57:03.353Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-294"],"updated_at":"2026-11-02T14:06:10.086163Z"}]}}